2002/05/21 by A. Pompili, Alexis Pompili, Pompili, Alexis
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Historical Astronomy and Related Studies #hep-ex
paper · pdf · doi:10.48550/arxiv.hep-ex/0205071
5 pages, 2 figures; proceedings of the XXXVII Rencontres de Moriond on Electroweak Interactions and Unified Theories, Les Arcs, France, 9-16 March 2002
arxiv created 2002/05/21 · openalex publication_date 2002/05/21 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Preliminary limits on the D0 mixing parameter y = ΔΓ/ 2 Γare obtained using about 57.8 fb-1 of data collected by BaBar in 2000 and 2001:y = (1.4 ± 1.0 (stat.) +0.6 -0.7 (syst.))%. y is extracted, provided that CP is conserved, by measuring separately the D0 lifetime for the Cabibbo-suppressed decay modes K- K+, π- π+ and the Cabibbo-favoured mode K- π+. Backgrounds are suppressed by D*-tag and particle identification requirements.